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Keith Pierce
Austin Keith Pierce (October 2, 1918 – March 11, 2005) was an American solar astronomer. Pierce played a key role in the development of the McMath–Pierce solar telescope at Kitt Peak National Observatory in Arizona. Biography Austin Keith Pierce was born October 2, 1918, in Tacoma, Washington. His father, Tracy Pierce, was a mathematician at the University of Nebraska–Lincoln and an amateur astronomer. From 1936 to 1938, he studied at the University of Nebraska–Lincoln, before transferring to the University of California, Berkeley where in 1940 he obtained a BSc in astronomy. In 1941 he married Mildred Buell, with whom he went on to have three children. During the Second World War, Pierce worked on uranium isotope separation as part of the Manhattan Project, first at the Lawrence Radiation Laboratory and then at Oak Ridge in Tennessee. In 1945 he returned to Berkeley, obtaining his doctorate in 1948 under C. Donald Shane. He then worked at the University of Michigan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tacoma, Washington
Tacoma ( ) is the county seat of Pierce County, Washington, United States. A port city, it is situated along Washington's Puget Sound, southwest of Seattle, northeast of the state capital, Olympia, Washington, Olympia, and northwest of Mount Rainier National Park. The city's population was 219,346 at the time of the 2020 United States census, 2020 census. Tacoma is the second-largest city in the Puget Sound area and the List of municipalities in Washington, third-largest in the state. Tacoma also serves as the center of business activity for the South Sound region, which has a population of about 1 million. Tacoma adopted its name after the nearby Mount Rainier, called wikt:Tacoma, təˡqʷuʔbəʔ in the Lushootseed, Puget Sound Salish dialect. It is locally known as the "City of Destiny" because the area was chosen to be the western terminus of the Northern Pacific Railroad in the late 19th century. The decision of the railroad was influenced by Tacoma's neighboring deep-wat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uranium
Uranium is a chemical element with the symbol U and atomic number 92. It is a silvery-grey metal in the actinide series of the periodic table. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons. Uranium is weakly radioactive because all isotopes of uranium are unstable; the half-lives of its naturally occurring isotopes range between 159,200 years and 4.5 billion years. The most common isotopes in natural uranium are uranium-238 (which has 146 neutrons and accounts for over 99% of uranium on Earth) and uranium-235 (which has 143 neutrons). Uranium has the highest atomic weight of the primordially occurring elements. Its density is about 70% higher than that of lead, and slightly lower than that of gold or tungsten. It occurs naturally in low concentrations of a few parts per million in soil, rock and water, and is commercially extracted from uranium-bearing minerals such as uraninite. In nature, uranium is found as uranium-238 (99. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tucson Citizen
The ''Tucson Citizen'' was a daily newspaper in Tucson, Arizona. It was founded by Richard C. McCormick with John Wasson as publisher and editor on October 15, 1870, as the ''Arizona Citizen''. When it ceased printing on May 16, 2009, the daily circulation was approximately 17,000, down from a high of 60,000 in the 1960s. The ''Citizen'' published as Tucson's afternoon paper, six days per week (except Sunday, when only the ''Arizona Daily Star'' (Tucson's morning paper during the week) was published as part of the two papers' joint operating agreement). The ''Tucson Citizen'' was the oldest continuously published newspaper in Arizona at the time it ceased publication. History Founder Richard C. McCormick had originally been the owner of the ''Weekly Arizonian, Arizonan''. However, when the editor of the ''Arizonan'' refused to support McCormick's re-election as congressional delegate for the territory of Arizona, McCormick took the press and started the ''Arizona Citizen'' with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physics Today
''Physics Today'' is the membership magazine of the American Institute of Physics. First published in May 1948, it is issued on a monthly schedule, and is provided to the members of ten physics societies, including the American Physical Society. It is also available to non-members as a paid annual subscription. The magazine informs readers about important developments in overview articles written by experts, shorter review articles written internally by staff, and also discusses issues and events of importance to the science community in politics, education, and other fields. The magazine provides a historical resource of events associated with physics. For example it discussed debunking the physics of the Star Wars program of the 1980s, and the state of physics in China and the Soviet Union during the 1950s and 1970s. According to the ''Journal Citation Reports'', the journal has a 2017 impact factor The impact factor (IF) or journal impact factor (JIF) of an academic journa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boulder, Colorado
Boulder is a home rule city that is the county seat and most populous municipality of Boulder County, Colorado, United States. The city population was 108,250 at the 2020 United States census, making it the 12th most populous city in Colorado. Boulder is the principal city of the Boulder, CO Metropolitan Statistical Area and an important part of the Front Range Urban Corridor. Boulder is located at the base of the foothills of the Rocky Mountains, at an elevation of above sea level. Boulder is northwest of the Colorado state capital of Denver. It is home of the main campus of the University of Colorado, the state's largest university. History On November 7, 1861, the Colorado General Assembly passed legislation to locate the University of Colorado in Boulder. On September 20, 1875, the first cornerstone was laid for the first building (Old Main) on the CU campus. The university officially opened on September 5, 1877. In 1907, Boulder adopted an anti- saloon ordinanc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Solar Observatory
The National Solar Observatory (NSO) is a United States public research institute to advance the knowledge of the physics of the Sun. NSO studies the Sun both as an astronomical object and as the dominant external influence on Earth. NSO is headquartered in Boulder and operates facilities at two locations - at the 4-meter Daniel K. Inouye Solar Telescope in the Haleakala Observatory on the island of Maui, and at Sacramento Peak near Sunspot in New Mexico. NSO provides its observations to the scientific community. It operates facilities, develops advanced instrumentation both in-house and through partnerships, conducts solar research, and carries out educational and public outreach. Visiting the observatories The National Solar Observatory HQ is located on the campus of the University of Colorado, Boulder. It also has some staff on Maui, and Sacramento Peak. Telescopes operated by the observatory Haleakala Observatory * Daniel K. Inouye Solar Telescope Sacramento Peak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kitt Peak Observatory
The Kitt Peak National Observatory (KPNO) is a United States astronomy, astronomical observatory located on Kitt Peak of the Quinlan Mountains in the Arizona-Sonoran Desert on the Tohono Oʼodham Nation, west-southwest of Tucson, Arizona. With more than twenty optical and two radio telescopes, it is one of the largest gatherings of astronomical instruments in the Earth's northern hemisphere. Kitt Peak National Observatory was founded in 1958. It is home to what was the largest solar telescope in the world, and many large astronomical telescopes of the late 20th century in the United States. The observatory was administered by the National Optical Astronomy Observatory (NOAO) from the early 1980s until 2019, after which it was overseen by NOIRLab. In June 2022, the Contreras Fire led to the evacuation of Kitt Peak. The fire reached the summit at 2 a.m. on Friday, June 17. Four non-scientific buildings, including a dormitory, were lost in the fire. As of Monday, June 20, the e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
McMath–Hulbert Observatory
The McMath-Hulbert Solar Observatory is a solar observatory in Lake Angelus, Michigan, USA. It was established in 1929 as a private observatory by father and son Francis Charles McMath and Robert Raynolds McMath and their friend, Judge Henry Hulbert. In 1932 the observatory was deeded to the University of Michigan which operated it until 1981, at which time it was sold into private ownership again. In 1932 a reflector telescope was added to the observatory as well as a spectroheliokinematograph . This instrument was designed to take motion pictures of the Sun. The McMath-Hulbert Solar Observatory is primarily known for the motion pictures that the McMaths made of various celestial phenomena, including the first movies of solar prominences in motion. Later work involved solar spectroscopy in the near infrared and participation in a solar flare patrol program in the 1950s. Robert McMath and one of the resident astronomers, Keith Pierce, established the McMath–Pierce solar tel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Wilson Observatory
The Mount Wilson Observatory (MWO) is an astronomical observatory in Los Angeles County, California, United States. The MWO is located on Mount Wilson, a peak in the San Gabriel Mountains near Pasadena, northeast of Los Angeles. The observatory contains two historically important telescopes: the Hooker telescope, which was the largest aperture telescope in the world from its completion in 1917 to 1949, and the 60-inch telescope which was the largest operational telescope in the world when it was completed in 1908. It also contains the Snow solar telescope completed in 1905, the 60 foot (18 m) solar tower completed in 1908, the 150 foot (46 m) solar tower completed in 1912, and the CHARA array, built by Georgia State University, which became fully operational in 2004 and was the largest optical interferometer in the world at its completion. Due to the inversion layer that traps warm air and smog over Los Angeles, Mount Wilson has steadier air than any other location in Nor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar Physics (journal)
''Solar Physics'' is a Peer review, peer-reviewed scientific journal published monthly by Springer Science+Business Media. The editors-in-chief are Lidia van Driel-Gesztelyi (various affiliations), John Leibacher (National Solar Observatory, and Institut d'astrophysique spatiale, Institut d'Astrophysique Spatiale), Cristina Mandrini (Universidad de Buenos Aires), and Inigo Arregui (Instituto de Astrofísica de Canarias). Scope and history The focus of this journal is fundamental research on the Sun and it covers all aspects of solar physics. Topical coverage includes solar-terrestrial physics and stellar research if it pertains to the focus of this journal. Publishing formats include regular manuscripts, invited reviews, invited memoirs, and topical collections. ''Solar Physics'' was established in 1967 by solar physicists Cornelis de Jager and Zdeněk Švestka, and publisher D. Reidel. Abstracting and indexing This journal is indexed by the following services: * Science Citatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar Telescope
A solar telescope is a special purpose telescope used to observe the Sun. Solar telescopes usually detect light with wavelengths in, or not far outside, the visible spectrum. Obsolete names for Sun telescopes include heliograph and photoheliograph. Professional solar telescopes Solar telescopes need optics large enough to achieve the best possible diffraction limit but less so for the associated light-collecting power of other astronomical telescopes. However, recently newer narrower filters and higher framerates have also driven solar telescopes towards photon-starved operations. Both the Daniel K. Inouye Solar Telescope as well as the proposed European Solar Telescope (EST) have larger apertures not only to increase the resolution, but also to increase the light-collecting power. Because solar telescopes operate during the day, seeing is generally worse than for night-time telescopes, because the ground around the telescope is heated which causes turbulence and degrades the res ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Raynolds McMath
Robert Raynolds McMath (May 11, 1891 – January 2, 1962) was a U.S. solar astronomer. Robert R. McMath (1891-1962) was a bridge engineer, businessman, and astronomer. Robert's father, Francis C. McMath, had made a fortune as a bridge builder. They both had a keen interest in amateur astronomy. So in 1922, the McMaths, along with Judge Henry S. Hulbert founded the McMath–Hulbert Observatory in Lake Angelus, Michigan. It was deeded to the University of Michigan in 1931, Robert served as the director of the McMath–Hulbert Observatory until 1961. In 1932, Robert extended the functionality of the spectroheliograph so that it could record motion pictures of the sun. This machine is known as a ''spectroheliokinematograph''; with it, he took astonishing moving pictures of solar storms, showing features on the sun's surface that lasted from seconds to days. In 1933, he and his father received the Franklin Institute's John Price Wetherill Medal. Robert McMath was an adviser t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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